package org.apache.maven.model.path;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.io.File;

import org.codehaus.plexus.component.annotations.Component;

/**
 * Resolves relative paths against a specific base directory.
 * 
 * @author Benjamin Bentmann
 */
@Component(role = PathTranslator.class)
public class DefaultPathTranslator implements PathTranslator {

  public String alignToBaseDirectory(String path, File basedir) {
    String result = path;

    if (path != null && basedir != null) {
      path = path.replace('\\', File.separatorChar).replace('/', File.separatorChar);

      File file = new File(path);
      if (file.isAbsolute()) {
        // path was already absolute, just normalize file separator and we're done
        result = file.getPath();
      } else if (file.getPath().startsWith(File.separator)) {
        // drive-relative Windows path, don't align with project directory but with drive root
        result = file.getAbsolutePath();
      } else {
        // an ordinary relative path, align with project directory
        result = new File(new File(basedir, path).toURI().normalize()).getAbsolutePath();
      }
    }

    return result;
  }

}
